Fan



J. ARONOFF Febu 1924,

FAN

Filfid June 19. 1922 2 Sheets-Sheet l a? 8 ma u n M Mm Wwm /M m Z w @M JWITNESSES Feb. 26, 1924; 1,485,242

J. ARONOFF FAN Filed June 19. 1922 2 Sheets-Sheet 2 15 f iZ/ZZQIATTORNEYS Patented F e 26, 1d.

Application filed June 19,1922. Serial no; a

To all whom iamag camera:

Be it lmown that I, Josnrn NOFF, a citizen of the United States, andresident of the city of New York, borough of :n-

c hattan, county of New York, and State of New York, have invented a newand Improved Fan, of whichthe following is a full, clear, and exactdescription.

My invention relates to a to provide certain new and useful fan, andaims improvements in connection with a device of this character.

It is an object of the present invention to provide a fan which ismovable with re- 5 s ct to a suplporting element, so that a b ast of airm be directed in various directions.

It is a further object of the present invention to construct a fan whichwill involve a mechanism permitting of its moving with respect to asupporting element for the purpose set forth in the preceding paragraph,but in which a further means will be provided which will serve toprevent this movement.

Another object of the present invention is that of constructin a deviceof the'character stated which 'w' l preferabl employ a plurality offans, and means or driving the same, which latter means may be actuatedto operate all of the fans synchronously, or to permit of an actuationof one or more of the same independent of the others.

Still another object of my invention is that of roviding a fan in whichthe angle at whic the blast of air is delivered may be varied accordingto the desire of the operator.

Among further objects of my invention are that of providing a fan embeding a relatively simple construction caps. le of being placed on themarket at a nominal figure, the fan proper being adapted to bepositively moved with respect to the supportin element therefor.

Wit these and further objects in mind my fan consists essentially of amotor, and a support for the motor, together with a fan, and meansconnecting the fan with the mo- 59 tor, the said fan proper beingcapable of being moved with respect to the motor mounting. .7

Reference is had to the attached sheets of drawings as illustrat onepractical bodiment of my, invention, and it will be seen in these viewsthat;

'Figure 1 is a sectional side elevation of a fan embodying my improvedconstruction.

Figure 2 and Figure 3 are sectional plan views taken along the lines 2-2and 3-3 and in the directionof the arrows indicated in Figure 1.

Figure 4 is a transverse sectional view taken along the line 44.- and inthe direction 3f the arrows also indicated in Figure i Figure 5 is afragmentary sectional view of a detail Eof the operating mechanismforming a art of my im roved construction and ta en along the ine 5--5and in the direction of the arrows indicated in Fi re 2. 1 v

11 these views the reference numeral 11 indicates the motor which may beof an desired type and construction and which 1s enclosed within asupporting housing 12, a gear housi 13 being formed adjacent the outerend 0 the housing 12 and being rotatably su ported thereby, by anysuitable means suc as that of providing an outwardly extendinannular-flange 14 adjacent the upper e go of the housing 13, and theprovision of a ring plate 15 atithe lower end of the housing 12, andextending in wardly therefrom, thus providing a ball race within whichan annular series of balls .16 may be disposed to freely permit of theturning of the housing 13 with respect to the housing 12.

New with a view of positively. rotating one housing with respect to thesecond of the same it will be noted that I referably form teeth 17 inthe upper edge 0 the housing 13, and these teeth in aggregate provide anannular rack which is enga ed by the teeth of a gear 18 carried by theousing 12. The shaft 19 of the motor is extended into the housing 13 andits body carries a worm 20 with which a worm wheel 21 co-operates. Thislatter element is mounted upon ashaft 22 which in turn carries a gear 23and the latter meshes with the gear'18 so'that upon the motor shaft 19bein rotated, the worm 20 and the sh 22 wil be accordingly rotat/ed,thus causing a corresponding movement to be transmitted from the '2 .23to the ar 18 and thus to the rash provided by the teeth 17 so that theoperates at h motor 11 will cause the housing 13 to be posigig'elyrotated with respect to the housm ow with a View of providing meanswhich will serve to prevent a movement of the housing 13 with respect tothe housing 12, if an operator desires to prevent this action, it willbe seen that one end of the shaft 22 is supported upon a crank 2 1lyingwithin the housing and having its outer end extending beyond the same,whereby upon the arm 25 being rocked the crank arm W111 becorrespondingly moved thus oscillating one end of the shaft 22 incidentto the provision ofa ball and socket support 26, at its opposite end. Inthis connection attention is invited to Figure 5 which shows in full anddotted lines, respectively, the position with which the wheel 21 mayassume with respect to the worm 20 and it will be obvious from theseviews that an operator may cause the crank 24 to assume a position whichwill cause a positive cooperation between the wheel 21 and the worm 20,but 11 it being desired to prevent a rotation o the housing 13 withrespect to the housing 12 a shifting of the crank 24 will achieve theresult desired in that it causes the worm wheel 21 to move out ofengagement with the worm 20 or in other words, to the osition shown indotted lines in the view a orereferred to. 7

It will further be seen that the motor shaft 19 carries a crown gear 27and a plurality of brackets 28 are associated with the housm 13 in amanner hereinafter describe to support fan shafts 29 in suitablebearings provided for this purpose. These shafts carry adjacent theirouter ends suitable fans 30 and incident to the association of burrgears 31 with the opposite ends of each of these shafts, and theco-operation of these latter gears with the crown gear 27 it will beobvious that upon the motor 11 being actuated that the crown gear willefiect an operation of the fans 30 to produce blasts of all.

If it is now desired to dispose one or more of the fan shafts 29 at anangle with respect to the axis of housing 13 different from that shownin Figure 1 this may be accomplished due to the peculiarity of thebracket mounting. In other words it will be noted that each of thebrackets 28' is provided with a slotted portion 32 in its base andextendin through this slotted portion is a shank o a wing bolt 33, whichlatter has the inner end of its shank screw threaded, and associatedwith the said housing 13. Thus due to the fact that the lower end of thehousing 13 is curved, and further for the reason that the inner contourof each of the brackets 32 corresponds to the outer contour of thiscurved portion, one or all of the brack ets can he slid downwardly ormoved upmea er wardly by simply releasing its associated clamping memberi. e. the bolt 33, and swinging the bracket to the position desiredsubsequent to which the same can again be affixed to the housing 13.

This action of the parts will not however cause a breaking of thedriving connection existing between the motor shaft 19, and the shafts29 due to the provision of the burr gears 31 and the crown gear 27. Thusit will be obvious that a swinging of any one of the shafts 29 withrespect to the housing would merely result in the teeth of the gear 31being slid with respect to the teeth of the gear 27 so that thisportion, in angularity to the shafts 29 and 19 will not in anyway'interfere with the driving of the former from the latter. It is alsoto be noted in this connection that an efiicient support for each ofthese shafts and each of its saddle members 3 1 are swingingly carriedat a point 35 by the brackets 36, it being noted that this point ofconnection, which may be established by suitable pins, is in line withthe center of the burr gear. Thus each of the shafts 29 will beefiiciently supported by a saddle member 34 in addition to the brackets28, and a disengagement of the gears 31 and 27 is rendered impossible byvirtue of the support provided at their inner end by the saddle member34 and the brackets 36.

Finally with a view of permitting any one of the fans being cut off fromoperating without in the least affecting the operation of the remainingfans it will be seen, as in Figures 1 and at, that each of 'the brackets36 is carried by a preferably screw threaded stem, 37 cooperating with asimilar screw threaded opening in the housing 13, so that if theoperation aforementioned is to be accomplished this may be achieved bsimply moving one of the stems 37 to rop the bracket 36 associatedtherewith, to thus cause a disengagement of the teeth of the burr gearfrom the teeth of the gear 27.

Thus all of the objects of my invention have been accomplished and itwill further be understood that numerous modifications of structure:might readily be resorted to without in the least departing from thescope of my claims; which are;

1. The combination of a plurality of fans disposed at an angle to eachother on horizontal axes, an electric motor arranged with its armatureshaft vertical for rotating all the fans, controlling devices forinclining one or more of such axes from the horizontal at will, andcontrolling devices for operatively disengaging one or more of said fansfrom said actuating means at will.

2. The combination of a plurality of fans disposed at an angle to eachother on horizontal axes, an electric motorearranged with fans, meansfor relatively redisposing the axes of said fans without discngagin saidactuating means, and means for re isposing the axis of one of said fansto disengage 5 said actuating means from the last-mew tioned fan.

3. The combination of a plurality of fans disposed at an angle to eachother on horizontal axes, an electric motor arranged with 10 itsarmature shaft vertical for rotating said fans, means for relativelyredisposing the axes of said fans without disengagin said actuatingmeans, and .means for re sposing the axisof one of said fans todisengage said actuating means from the last-mentioned fan, both the twomeans last mentioned inc-ludin 'in common a toothed gear driven by saiactuating means and a toothed gear fixed relative to the fan lastmentioned.

JOSEPH ARONOFF.

